Forging-press.



T. E. HOLMES.

I FOR GING PRESS. APPLICATION FILED AUG.I0. I914.

1,275,258. Patented Aug. '13, 1918.

a 2 SHEETS-SHEET I- I *I J" ll E. HOLMES. FORGING PRESS. APPLICATIONFILED AUG. I0. 1914.

Patented Aug. 13, 1918.

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THOMAS EDMUND HOLMES, F NETHE UNITED ENGINEERING 85 FOUNDRY CORPORATIONOF PENNSYLVANIA.

R EDGE, SHEFFIELD, ENGLAND, ASSIGNOR TO COMPANY, OF PITTSBURGH,lENNSYLVANIA, A

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Specification of Letters'latent.

Patented Aug. 15, 1918.

- Application filed August 10,1914. I Serial No. 856,050.

To all whom it may concern Be it known that I, THOMAS EDMUND HOLMES, asubjectof the Kin of England, and resident of Nether Edge, heflield,England, have invented a new and useful Improvemeent in Forging-Presses;and I do hereby declare the following to be a full, clear, and exactdescription thereof.

My invention relates to forging-presses, forging hammers and ma chinesof like character where a forging or hammering operation between dies isemployed to reduce a mass of steel to the desired shape or contour; Inmachines of this character it is often necessary to employ dies having aplurality of working grooves, the material being transferred from one tothe other in bringing it to its proper shape, such for instance is thevertical as in the forging of an axle. the dies have been arrangedstationary in the upper and lower die-blocks, and when the axle wasbeing operated on by One of the grooves to the right or left of thecenter groove, the strain on the machine was very great, due to thepressing operation taking place at one side of the aXIal line of the ramor plunger to which the upper die is attached. Being off center the ma:chine is not properly balanced, and a le verage occurred which put astrain on'the guides for the press head as well as on the cross-head anddie blocks.

The object of mypresent invention is to provide for the forgingoperations in the axial line of the ram. or plunger of the press, andthis I accomplish by arranging for the movement of the dieshorizontally,- sothat the grooves in which the articles to be worked onare to be inclosed may be broughtdirectly in to the plunger.

In the accompanying drawings, Figure 1 axial line of the ram or showingmy invention applied thereto, the upper portion being shown'in section;Fig. 2 is a side view; Fig. 3 is a section on the line 3%; Fig. 1 andFigs. 4 and 5 are details of the upper and lower die and holder.

Fig. 6 is an enlarged sectional 'view of the sliding sleeve attached tothe cross-head.

I have illustrated my invention in connection with a forging-press ofwhat is known asthe Davy type operating on the steam intensifierHeretofore elevation of a forglng presssystem in which the pressing 4.The anvil. block 5'has the tongue portion 6, which engages the groove 7formed in the guide-block 4, and the anvil-block 5 is adapted to slideback and forth in said groove, for the purpose fully hereinafter setforth; The anvil 8 is secured to the anvil block 5 by the ordinarydovetail connection. The working face of the anvil is provided with thegrooves 9 which are shaped to give in connection with the grooves of theupper die, the desired contour to the article to be forged.

The pillars 10 are carried by the base 3, and said pillars form theguides for the cross-head 11. The cross-head 11 has the projection 12which engages the ram 13 workingin the cylinder 14. The pipe 15 connectsup the cylinder 14 with the Watersystem of a steam intensifier of theDavy type, as above referred to. Ithas not been deemed necessary,however, to go into the details of suchlconstruction, as it forms nopart of the present invention.

'.Ordinar1ly, lifting cylinders 16 with" The guide-block 18 is securedto the cross head by an ordinary dove-tall connection,

and said guide-block has the T-g'uide 19 with which the die-block 20 isadapted to engage by means of the indicated in Fig. 4.

groove 21, as clearly The upper die 22 is secured to the die I block 20by the ordinary dove-tail connection. I

Having now described how the lower anvil-block and the upper dle-blockare mounted so as to be capable of movement 1n the guide-blocks 4 and18, respectively, I

will now describe the mechanism for movlng said guide-blocks.

The vertical rod 23 is mountedin bearings 24 and 25. The

ortion of said rod 23 intermediate the bearings 24 and 25 is square incross-section as at 26, and a sleeve portion 27 connected to thecross-head 11 engages said rod, said sleeve portion .being adapted toslide up and down thereon.

' rod 23, and an arm 35 is pivoted to said To provide, the rod 23 withinsaidsleeve, pose more fully hereinafter set forth, the bushing 27 isinserted in said sleeve and held in place by the nut 27". The squareportion 26 of the rod 23 en ages the bore of the bushing 2 7 so that saibushing rotates in said sleeve when said rod is rotated.

Mounted on the girder 2 is the cylinder 28, with steam connections 29 onopposite sides of the piston 30. The piston rod 31 is connected up bylink 32 to the crank-arm 33, said crank arm being mounted on the squareportion of the rod 23,so that any movement of the crank-arm 33 will actto rotate the rod 23 in its bearings. A crank-arm 34 is likewise securedto the square portion of the crank-arm 34: at one end, and at itsopposite end to the projection36 on the anvil block 5. The rod 35 isprovided with the turn-buckle 37 for purposes of adjustment.

A crank-arm is likewise secured to the square portion of the pivoted tosaid crank-arm 34 at one end, and

I atits opposite end to the projection 36 on the anvil block 5. The rodis provided with the turn-buckle 37 for purposes of adjustment.

A crank-arm 38 is connected to the bushing 27 on the rod 23 andpivotally connected to the rod 39, said rod being pivoted at its innerend to the projection 4:0 on the upper die-block 20. v j

.When forging an axle in my improved machine, the axle-blank is laidupon the lower anvil-block resting in one of the grooves9, and if thecentral groove is. being employed, the parts remain in the positionindicated in Fig. 1, and the upper die is lowered and the forgingoperation takes place, the line of pressure on the article beingformedon the'axial line of the ram of the I press-head. When, however,it is desired to bring one of the grooves to one side or the other ofthe central groove into play, the o orator by a suitable valvecontrolling t e however, for the rotation of for the purbase-plate isrelieve rod 23, and an arm istionary die,

rava es supply of motive fluid to the cylinder 28 directs the motivefluid into one end or the other of said cylinder so as to move thepiston, and the. movement of said piston through the connectionsdescribed will act to rotate the rod 23, and the rotation of said rodwill act through the connections described to simultaneously move theanvilblock 5 and the die-block 20 into position to bring the grooves inwhich the next opera-' tion is to take place over into position, so thatthe center of said combined grooves will be on the axial line of the ramof the press. In this manner, the forging operation always takes placewith'the'article to be forged in the direct line of the ram, and in this'way, the strains on the machine due to working 0d the center areavoided, and the work is distributed evenly on the cross-head and on thepillars 10. Furthermore,- the strain on the bolts securin the machine tothe and loosening and racking of the frame prevented.

What I claim. is:

In a forging-press, or like machine, the combination of a stationary diemovable at right angles to .themovement of the press, areciprocatorycross-head, a die supported by sai cross-head and movableat right angles tothe line of movement of said press,

said dies having registering work forming depressions therein, arotatable rod, a motor,- connections between said motor and said rod,connections between said rod and the star a sleeve member. on saidcross-- head engaging said rod and slidable thereon, a bushing in saidrod, and connections between said bushing and said die on saidcross-head.

In testimony whereof I, the said TnoMA's EDMUND HoLMEs, have hereuntoset ,my hand. I

THOMAS EDMUND'HOLMES.

Witnesses: 1

LUTHER J. FARR, R ce K. Evans.

sleeve rotatable with said

